Initialize a ValueCollection object from a json dictionary.

def _from_dict(cls, _dict):
        """Initialize a ValueCollection object from a json dictionary."""
        args = {}
        if 'values' in _dict:
            args['values'] = [
                Value._from_dict(x) for x in (_dict.get('values'))
            ]
        else:
            raise ValueError(
                'Required property \'values\' not present in ValueCollection JSON'
            )
        if 'pagination' in _dict:
            args['pagination'] = Pagination._from_dict(_dict.get('pagination'))
        else:
            raise ValueError(
                'Required property \'pagination\' not present in ValueCollection JSON'
            )
        return cls(**args)