public static Function getFunction(Function function, Program otherProgram) {
		return (Function) getNamespace(function, otherProgram);
	}
Given a function, get the corresponding function from the 
specified otherProgram.  Function matchup is done based upon 
function entry point only.  The function bodies may be different.
@param function function to look for
@param otherProgram other program
@return corresponding function for otherProgram or null if no such function exists.
Ghidra/Features/Base/src/main/java/ghidra/program/util/DiffUtility.java