def __init__(self, **kwargs):
<EOL>for key, value in list(self._default_value.items()):<EOL><INDENT>setattr(self, key, value)<EOL><DEDENT>for key, value in list(kwargs.items()):<EOL><INDENT>setattr(self, key, value)<EOL><DEDENT>
Construct an Metadata object
Abstract Class _default_value must be specified by

Metadata()

Parameters
----------

Returns
-------
Metadata