Membrane.Element.Base.membrane_pads
You're seeing just the callback
membrane_pads, go back to Membrane.Element.Base module for more information.
Specs
membrane_pads() :: [{Membrane.Pad.name_t(), Membrane.Pad.description_t()}]
Automatically implemented callback returning specification of pads exported by the element.
Generated by Membrane.Element.WithInputPads.def_input_pad/2
and Membrane..WithOutputPads.def_output_pad/2 macros.