def __init__(self, type, property_name, value):
self.type = type<EOL>self.property_name = property_name<EOL>self.value = value<EOL>
Create a Filter.

        :param type: The type of the filter, eg "eq" or "gt".
        :type type: str
        :param property_name: The name of property on which to filter.
        :type property_name: str
        :param value: The value to which the property will be compared.
        :type value: str or list(str)