def __init__(self, uid=None, names=None, ids=None, classifications=None, source=None, quantity=None,
                 chemical_formula=None, composition=None, properties=None, preparation=None, sub_systems=None,
                 references=None, contacts=None, licenses=None, tags=None, **kwargs):
        """
        Constructor.

        :param uid: String with the permanent ID for this record.
        :param names: List of strings with common names of the chemical system.
        :param ids: List of dictionaries, strings, numbers, or :class:`.Id` objects that identify the system.
        :param classifications: List of dictionaries, strings, numbers, or :class:`.Classification` objects that
        classify the system.
        :param source: Dictionary, string, or :class:`.Source` object with the source of the system.
        :param quantity: Dictionary or :class:`.Quantity` object with the quantity of the system.
        :param chemical_formula: String with the chemical formula.
        :param composition: List of dictionaries or :class:`.Composition` objects that describe the composition of
                the chemical system.
        :param properties: List of dictionaries or :class:`.Property` objects with properties of the system.
        :param preparation: List of dictionaries or :class:`.ProcessStep` objects with the preparation
                information of the system.
        :param sub_systems: List of dictionaries or :class:`.System` objects with the subsystems of the system.
        :param references: List of dictionaries or :class:`.Reference` objects where information about the system
                is published.
        :param contacts: List of dictionaries, strings, or :class:`.Person` objects with people to contact for
                information about the system.
        :param licenses: List of dictionaries, strings, or :class:`.License` objects with licensing information
                for data about the system.
        :param tags: List of strings or numbers that are tags for this object.
        :param kwargs: Dictionary of fields that are not supported.
        """
        super(ChemicalSystem, self).__init__(uid=uid, names=names, ids=ids, classifications=classifications,
                                             source=source, quantity=quantity, properties=properties,
                                             preparation=preparation, sub_systems=sub_systems, references=references,
                                             contacts=contacts, licenses=licenses, tags=tags, **kwargs)
        self._chemical_formula = None
        self.chemical_formula = chemical_formula
        self._composition = None
        self.composition = composition
        self.category = kwargs['category'] if 'category' in kwargs else 'system.chemical'
def __init__ ( self , uid = None , names = None , ids = None , classifications = None , source = None , quantity = None , chemical_formula = None , composition = None , properties = None , preparation = None , sub_systems = None , references = None , contacts = None , licenses = None , tags = None , ** kwargs ) : super ( ChemicalSystem , self ) . __init__ ( uid = uid , names = names , ids = ids , classifications = classifications , source = source , quantity = quantity , properties = properties , preparation = preparation , sub_systems = sub_systems , references = references , contacts = contacts , licenses = licenses , tags = tags , ** kwargs ) self . _chemical_formula = None self . chemical_formula = chemical_formula self . _composition = None self . composition = composition self . category = kwargs [ 'category' ] if 'category' in kwargs else 'system.chemical'
Constructor.

        :param uid: String with the permanent ID for this record.
        :param names: List of strings with common names of the chemical system.
        :param ids: List of dictionaries, strings, numbers, or :class:`.Id` objects that identify the system.
        :param classifications: List of dictionaries, strings, numbers, or :class:`.Classification` objects that
        classify the system.
        :param source: Dictionary, string, or :class:`.Source` object with the source of the system.
        :param quantity: Dictionary or :class:`.Quantity` object with the quantity of the system.
        :param chemical_formula: String with the chemical formula.
        :param composition: List of dictionaries or :class:`.Composition` objects that describe the composition of
                the chemical system.
        :param properties: List of dictionaries or :class:`.Property` objects with properties of the system.
        :param preparation: List of dictionaries or :class:`.ProcessStep` objects with the preparation
                information of the system.
        :param sub_systems: List of dictionaries or :class:`.System` objects with the subsystems of the system.
        :param references: List of dictionaries or :class:`.Reference` objects where information about the system
                is published.
        :param contacts: List of dictionaries, strings, or :class:`.Person` objects with people to contact for
                information about the system.
        :param licenses: List of dictionaries, strings, or :class:`.License` objects with licensing information
                for data about the system.
        :param tags: List of strings or numbers that are tags for this object.
        :param kwargs: Dictionary of fields that are not supported.