Geo.WKB.encode_to_iodata
You're seeing just the function
encode_to_iodata
, go back to Geo.WKB module for more information.
Specs
encode_to_iodata(Geo.geometry(), Geo.endian()) :: iodata() | no_return()
Takes a Geometry and returns a WKB as iodata. The endian decides what the byte order will be.