def __iadd__(self, other):
        """Put ModelElement(s) in this content.

        :param ModelElement(s) other: other element(s) to put to this.
        :return: self.
        :raise: TypeError if other is not a ModelElement(s)."""

        return self.__i(
            other=other, func=lambda melt: self.__setitem__(melt.name, melt)
        )
def __iadd__ ( self , other ) : return self . __i ( other = other , func = lambda melt : self . __setitem__ ( melt . name , melt ) )
Put ModelElement(s) in this content.

        :param ModelElement(s) other: other element(s) to put to this.
        :return: self.
        :raise: TypeError if other is not a ModelElement(s).