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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 schema(self, name, component=None, **kwargs):
 """Add a new schema to the spec. :param str name: identifier by which schema may be referenced. :param dict component: schema definition. .. note:: If you are using `apispec.ext.marshmallow`, you can pass fields' metadata as additional keyword arguments. For example, to add ``enum`` and ``description`` to your field: :: status = fields.String( required=True, enum=['open', 'closed'], description='Status (open or closed)', ) https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#schemaObject """

        if name in self._schemas:
            raise DuplicateComponentNameError(
                'Another schema with name "{}" is already registered.'.format(name)
            )
        component = component or {}
        ret = component.copy()
        # Execute all helpers from plugins
        for plugin in self._plugins:
            try:
                ret.update(plugin.schema_helper(name, component, **kwargs) or {})
            except PluginMethodNotImplementedError:
                continue
        self._schemas[name] = ret
        return self