How to use the ember-flexberry-data.Projection.belongsTo function in ember-flexberry-data

export let defineProjections = function (modelClass) {
  modelClass.defineProjection('Import', 'fd-base-association', {
    startRole: Projection.attr(''),
    endRole: Projection.attr(''),
    referenceCount: Projection.attr(''),
    startClass: Projection.belongsTo('fd-class', '', {

    }),
    endClass: Projection.belongsTo('fd-class', '', {

    })
  });
  modelClass.defineProjection('PropertySearch', 'fd-base-association', {
    startRole: Projection.attr(''),
    endRole: Projection.attr(''),
    startClass: Projection.belongsTo('fd-class', '', {
      nameStr: Projection.attr('')
    }),
    endClass: Projection.belongsTo('fd-class', '', {

    })
  });

description: Projection.attr('Description')
  });
  modelClass.defineProjection('EditPropertyLookups', 'fd-dev-inheritance', {
    parent: Projection.belongsTo('fd-class', '', {
      name: Projection.attr('')
    }, { hidden: true }),
    child: Projection.belongsTo('fd-class', '', {
      name: Projection.attr('')
    }, { hidden: true })
  });
  modelClass.defineProjection('FdPreloadMetadata', 'fd-dev-inheritance', {
    referenceCount: Projection.attr(''),
    name: Projection.attr(''),
    description: Projection.attr(''),
    nameStr: Projection.attr(''),
    stage: Projection.belongsTo('fd-stage', '', {
      name: Projection.attr('')
    }),
    child: Projection.belongsTo('fd-class', '', {
      name: Projection.attr('')
    }),
    parent: Projection.belongsTo('fd-class', '', {
      name: Projection.attr('')
    })
  });
  modelClass.defineProjection('Generator', 'fd-dev-inheritance', {
    referenceCount: Projection.attr('ReferenceCount', { hidden: true }),
    name: Projection.attr('Name', { hidden: true }),
    description: Projection.attr('Description', { hidden: true }),
    nameStr: Projection.attr('NameStr', { hidden: true }),
    child: Projection.belongsTo('fd-class', 'Child', {

export let defineProjections = function (modelClass) {
  modelClass.defineProjection('Import', 'fd-inheritance', {
    referenceCount: Projection.attr(''),
    name: Projection.attr(''),
    parent: Projection.belongsTo('fd-class', '', {

    }),
    child: Projection.belongsTo('fd-class', '', {

    })
  });
  modelClass.defineProjection('References', 'fd-inheritance', {
    referenceCount: Projection.attr('')
  });
};

hierarchicalMaster: Projection.attr('HierarchicalMaster', { hidden: true }),
      listFormOperations: Projection.attr('ListFormOperations', { hidden: true }),
      listFormOperationsStr: Projection.attr('ListFormOperationsStr', { hidden: true }),
      orderNum: Projection.attr('OrderNum', { hidden: true }),
      propertyLookup: Projection.attr('PropertyLookup', { hidden: true }),
      propertyLookupStr: Projection.attr('PropertyLookupStr', { hidden: true }),
      viewForForm: Projection.attr('ViewForForm', { hidden: true }),
      name: Projection.attr('Name', { hidden: true }),
      description: Projection.attr('Description', { hidden: true }),
      nameStr: Projection.attr('NameStr', { hidden: true }),
      controls: Projection.hasMany('fd-dev-form-control', '', {
        name: Projection.attr(''),
        propertyPath: Projection.attr(''),
        settingsXml: Projection.attr(''),
        order: Projection.attr(''),
        controlType: Projection.belongsTo('fd-dev-control-type', '', {
          name: Projection.attr('')
        }),
        propertyType: Projection.belongsTo('fd-dev-type-definition', '', {
          name: Projection.attr('')
        }),
        formView: Projection.belongsTo('fd-dev-form-view', '', {
          view: Projection.belongsTo('fd-dev-view', '', {

          })
        })
      })
    }),
    views: Projection.hasMany('fd-dev-view', '', {
      name: Projection.attr(''),
      description: Projection.attr(''),
      definition: Projection.attr(''),

modelClass.defineProjection('ListFormView', 'fd-dev-uml-cad', {
    name: Projection.attr('Name'),
    description: Projection.attr('Description'),
    changeUser: Projection.attr('Change user'),
    changeDate: Projection.attr('Change date'),
    createUser: Projection.attr('Create user'),
    createDate: Projection.attr('Create date'),
    subsystem: Projection.belongsTo('fd-subsystem', '', {
      stage: Projection.belongsTo('fd-stage', '', {
      }, { hidden: true }),
    }, { hidden: true }),
  });
  modelClass.defineProjection('SearchDiagram', 'fd-dev-uml-cad', {
    name: Projection.attr(''),
    subsystem: Projection.belongsTo('fd-subsystem', '', {
      stage: Projection.belongsTo('fd-stage', '', {

      }),
    }),
  });
  modelClass.defineProjection('FdUmlCad', 'fd-dev-uml-cad', {
    name: Projection.attr(''),
    primitivesJsonString: Projection.attr(''),
    primitivesStreamString: Projection.attr(''),
    caseObjectsString: Projection.attr(''),
    subsystem: Projection.belongsTo('fd-subsystem', '', {

    })
  });
};

name: Projection.attr(''),
      createDate: Projection.attr(''),
      createUser: Projection.attr(''),
      changeDate: Projection.attr(''),
      changeUser: Projection.attr('')
    }),
    filelinks: Projection.hasMany('fd-filelink', '', {
      name: Projection.attr('Название'),
      description: Projection.attr('Описание')
    })
  });
  modelClass.defineProjection('PathSearchView', 'fd-subsystem', {
    name: Projection.attr(''),
    stage: Projection.belongsTo('fd-stage', '', {
      name: Projection.attr(''),
      configuration: Projection.belongsTo('fd-configuration', '', {
        name: Projection.attr(''),
        project: Projection.belongsTo('fd-project', '', {
          name: Projection.attr(''),
          repository: Projection.belongsTo('fd-repository', '', {
            name: Projection.attr('')
          })
        })
      })
    })
  });
  modelClass.defineProjection('SearchSystem', 'fd-subsystem', {
    name: Projection.attr(''),
    stage: Projection.belongsTo('fd-stage', '', {
      name: Projection.attr('')
    })
  });

changeUser: Projection.attr('')
    }),
    filelinks: Projection.hasMany('fd-filelink', '', {
      name: Projection.attr('Название'),
      description: Projection.attr('Описание')
    })
  });
  modelClass.defineProjection('PathSearchView', 'fd-subsystem', {
    name: Projection.attr(''),
    stage: Projection.belongsTo('fd-stage', '', {
      name: Projection.attr(''),
      configuration: Projection.belongsTo('fd-configuration', '', {
        name: Projection.attr(''),
        project: Projection.belongsTo('fd-project', '', {
          name: Projection.attr(''),
          repository: Projection.belongsTo('fd-repository', '', {
            name: Projection.attr('')
          })
        })
      })
    })
  });
  modelClass.defineProjection('SearchSystem', 'fd-subsystem', {
    name: Projection.attr(''),
    stage: Projection.belongsTo('fd-stage', '', {
      name: Projection.attr('')
    })
  });
};

propertyType: Projection.belongsTo('fd-dev-type-definition', '', {
      name: Projection.attr('')
    }),
    formView: Projection.belongsTo('fd-dev-form-view', '', {
      view: Projection.belongsTo('fd-dev-view', '', {

      })
    })
  });
  modelClass.defineProjection('FormControlL', 'fd-dev-form-control', {
    name: Projection.attr('Имя'),
    controlType: Projection.belongsTo('fd-dev-control-type', '', {
      name: Projection.attr('Тип эдемента управления')
    }, { hidden: true }),
    order: Projection.attr('', { hidden: true }),
    propertyType: Projection.belongsTo('fd-dev-type-definition', '', {
      name: Projection.attr('Тип свойства')
    }, { hidden: true })
  });
};

export let defineProjections = function (modelClass) {
  modelClass.defineProjection('EditView', 'fd-class-storage-type', {
    connectionName: Projection.attr(''),
    connectionString: Projection.attr(''),
    storageType: Projection.belongsTo('fd-storage-type', '', {

    }, { displayMemberPath: 'shortName' })
  });
  modelClass.defineProjection('FdEditClassForm', 'fd-class-storage-type', {
    connectionName: Projection.attr('Имя соединения'),
    connectionString: Projection.attr('Строка соединения'),
    class: Projection.belongsTo('fd-dev-class', '', {

    }, { hidden: true }),
    storageType: Projection.belongsTo('fd-storage-type', 'Тип хранилища', {

    }, { displayMemberPath: 'shortName' })
  });
};

});
  modelClass.defineProjection('ListFormView', 'fd-dev-uml-cad', {
    name: Projection.attr('Name'),
    description: Projection.attr('Description'),
    changeUser: Projection.attr('Change user'),
    changeDate: Projection.attr('Change date'),
    createUser: Projection.attr('Create user'),
    createDate: Projection.attr('Create date'),
    subsystem: Projection.belongsTo('fd-subsystem', '', {
      stage: Projection.belongsTo('fd-stage', '', {
      }, { hidden: true }),
    }, { hidden: true }),
  });
  modelClass.defineProjection('SearchDiagram', 'fd-dev-uml-cad', {
    name: Projection.attr(''),
    subsystem: Projection.belongsTo('fd-subsystem', '', {
      stage: Projection.belongsTo('fd-stage', '', {

      }),
    }),
  });
  modelClass.defineProjection('FdUmlCad', 'fd-dev-uml-cad', {
    name: Projection.attr(''),
    primitivesJsonString: Projection.attr(''),
    primitivesStreamString: Projection.attr(''),
    caseObjectsString: Projection.attr(''),
    subsystem: Projection.belongsTo('fd-subsystem', '', {

    })
  });
};