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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _from_dict(cls, _dict):
 """Initialize a Workspace object from a json dictionary."""

        args = {}
        if 'name' in _dict:
            args['name'] = _dict.get('name')
        else:
            raise ValueError(
                'Required property \'name\' not present in Workspace JSON')
        if 'description' in _dict:
            args['description'] = _dict.get('description')
        if 'language' in _dict:
            args['language'] = _dict.get('language')
        else:
            raise ValueError(
                'Required property \'language\' not present in Workspace JSON')
        if 'metadata' in _dict:
            args['metadata'] = _dict.get('metadata')
        if 'learning_opt_out' in _dict:
            args['learning_opt_out'] = _dict.get('learning_opt_out')
        else:
            raise ValueError(
                'Required property \'learning_opt_out\' not present in Workspace JSON'
            )
        if 'system_settings' in _dict:
            args['system_settings'] = WorkspaceSystemSettings._from_dict(
                _dict.get('system_settings'))
        if 'workspace_id' in _dict:
            args['workspace_id'] = _dict.get('workspace_id')
        else:
            raise ValueError(
                'Required property \'workspace_id\' not present in Workspace JSON'
            )
        if 'status' in _dict:
            args['status'] = _dict.get('status')
        if 'created' in _dict:
            args['created'] = string_to_datetime(_dict.get('created'))
        if 'updated' in _dict:
            args['updated'] = string_to_datetime(_dict.get('updated'))
        if 'intents' in _dict:
            args['intents'] = [
                Intent._from_dict(x) for x in (_dict.get('intents'))
            ]
        if 'entities' in _dict:
            args['entities'] = [
                Entity._from_dict(x) for x in (_dict.get('entities'))
            ]
        if 'dialog_nodes' in _dict:
            args['dialog_nodes'] = [
                DialogNode._from_dict(x) for x in (_dict.get('dialog_nodes'))
            ]
        if 'counterexamples' in _dict:
            args['counterexamples'] = [
                Counterexample._from_dict(x)
                for x in (_dict.get('counterexamples'))
            ]
        return cls(**args)