Returns a new :class:`.Lv2Effect` by the valid lv2_uri

        :param string lv2_uri:
        :return Lv2Effect: Effect created

def build(self, lv2_uri):
        """
        Returns a new :class:`.Lv2Effect` by the valid lv2_uri

        :param string lv2_uri:
        :return Lv2Effect: Effect created
        """
        try:
            plugin = self._plugins[lv2_uri]
        except KeyError:
            raise Lv2EffectBuilderError(
                "Lv2EffectBuilder not contains metadata information about the plugin '{}'. \n"
                "Try re-scan the installed plugins using the reload method::\n"
                "   >>> lv2_effect_builder.reload(lv2_effect_builder.lv2_plugins_data())".format(lv2_uri))

        return Lv2Effect(plugin)