revising core api to reference type of object in schema

[heckj]

Work In Progress

Core API updates - primarily replicating and renaming original API methods to shift to a usage that has the type of internal schema object being used, to help with clarity when using the core API.

• [ ] update documentation
• [ ] update tests to resolve all "deprecation" warnings

A classic example of what this deprecation will look like in existing code:

[heckj]

Further updates pending community feedback...