Answer
The reference documentation for these standard framework utility API packages is included in the local IFS Technical Documentation installation, under its foundation/framework API reference section — this doesn't require any external login, since it's installed and browsable locally within the environment's own Technical Documentation. The same content is also mirrored on IFS's external developer/portal resources, but accessing it there specifically requires logging in with an IFS Portal account; checking the local Technical Documentation installation first avoids needing that external account at all.