How to use the @rxweb/reactive-form-validators.RxwebValidators.alphaNumeric function in @rxweb/reactive-form-validators

() => {
          expect(RxwebValidators.alphaNumeric({allowWhiteSpace:true})(new FormControl('Victoria@ Park'))).toEqual({ 'alphaNumeric': { message: 'Only alphanumerics are allowed.', refValues: ['Victoria@ Park'] } });
        });
        it('should error,allowWhiteSpace true and messageKey is defined.',

ngOnInit() {
        this.locationFormGroup = this.formBuilder.group({
            flatAddress:['', RxwebValidators.alphaNumeric({allowWhiteSpace:true })], 
        });
    }
}

ngOnInit() {
        this.locationFormGroup = this.formBuilder.group({
            flatAddress:['', RxwebValidators.alphaNumeric({allowWhiteSpace:true })], 
        });
    }
}

ngOnInit() {
        this.locationFormGroup = this.formBuilder.group({
            areaName:['', RxwebValidators.alphaNumeric()], 
            flatAddress:['', RxwebValidators.alphaNumeric({allowWhiteSpace:true })], 
            postalAddress:['', RxwebValidators.alphaNumeric({allowWhiteSpace:true  ,message:'Please enter only alphanumerics, special characters are not allowed and whitespace is allowed.' })], 
            countryCode:['', RxwebValidators.alphaNumeric({conditionalExpression:(x,y) => x.areaName == "Delhi"  })], 
            cityCode:['', RxwebValidators.alphaNumeric({conditionalExpression:'x => x.areaName =="Delhi"' })], 
        });
    }
}

ngOnInit() {
        this.locationFormGroup = this.formBuilder.group({
            areaName:['', RxwebValidators.alphaNumeric()], 
        });
    }
}

ngOnInit() {
        this.locationFormGroup = this.formBuilder.group({
            postalAddress:['', RxwebValidators.alphaNumeric({message:'Please enter only alphanumerics, special characters are not allowed.' })], 
        });
    }
}

ngOnInit() {
        this.locationFormGroup = this.formBuilder.group({
            areaName:['', RxwebValidators.alphaNumeric()], 
            flatAddress:['', RxwebValidators.alphaNumeric({allowWhiteSpace:true })], 
            postalAddress:['', RxwebValidators.alphaNumeric({message:'Please enter only alphanumerics, special characters are not allowed.' })], 
            countryCode:['', RxwebValidators.alphaNumeric({conditionalExpression:(x,y) => x.areaName == "Delhi"  })], 
            cityCode:['', RxwebValidators.alphaNumeric({conditionalExpression:'x => x.areaName =="Delhi"' })], 
        });
    }
}

ngOnInit() {
        this.locationFormGroup = this.formBuilder.group({
            areaName:['', RxwebValidators.alphaNumeric()], 
        });
    }
}

ngOnInit() {
        this.locationFormGroup = this.formBuilder.group({
            areaName:['', RxwebValidators.alphaNumeric()], 
            cityCode:['', RxwebValidators.alphaNumeric({conditionalExpression:'x => x.areaName =="Delhi"' })], 
            countryCode:['', RxwebValidators.alphaNumeric({conditionalExpression:(x,y) => x.areaName == "Delhi"  })], 
        });
    }
}

ngOnInit() {
        this.locationFormGroup = this.formBuilder.group({
            postalAddress:['', RxwebValidators.alphaNumeric({allowWhiteSpace:true  ,message:'Please enter only alphanumerics, special characters are not allowed and whitespace is allowed.' })], 
        });
    }
}