public ComplexDataInterface::isEmpty()

public ComplexDataInterface::set($property_name, $value

public ComplexDataInterface::get($property_name)

public ComplexDataInterface::toArray()

Interface for complex data; i.e. data containing named and typed properties. The name of a property has to be a valid PHP variable name, starting

public ComplexDataInterface::getDataDefinition()

public ComplexDataInterface::getProperties($include_computed