How to use the yaql.language.specs.yaql_property function in yaql

@specs.yaql_property(DATETIME_TYPE)
def weekday(dt):
    return dt.weekday()

@specs.yaql_property(dsl_types.MuranoProperty)
@specs.name('name')
def property_name(murano_property):
    return murano_property.name

@specs.yaql_property(dsl_types.MuranoMethodArgument)
@specs.name('has_default')
def argument_has_default(method_argument):
    return method_argument.has_default

@specs.yaql_property(DATETIME_TYPE)
def microsecond(dt):
    return dt.microsecond

@specs.yaql_property(DATETIME_TYPE)
def second(dt):
    return dt.second

@specs.yaql_property(yaqltypes.DateTime())
def date(dt):
    return DATETIME_TYPE(
        year=dt.year, month=dt.month, day=dt.day, tzinfo=dt.tzinfo)

@specs.yaql_property(dsl_types.MuranoMethodArgument)
@specs.name('declaring_method')
def argument_owner(method_argument):
    return method_argument.murano_method

@specs.yaql_property(dsl_types.MuranoPackage)
def types(murano_package):
    return tuple(
        murano_package.find_class(cls, False)
        for cls in murano_package.classes
    )

@specs.yaql_property(dsl_types.MuranoType)
@specs.name('name')
def type_name(murano_type):
    return murano_type.name

@specs.yaql_property(DATETIME_TYPE)
def offset(dt):
    return dt.utcoffset() or ZERO_TIMESPAN