public Function getFunction() {
		Address addr = getFuncAddress();
		return programContext.getProgram().getFunctionManager().getFunctionAt(addr);
	}
Returns the Ghidra function that corresponds to this go function.

@return Ghidra {@link Function}, or null if there is no Ghidra function at the address
Ghidra/Features/Base/src/main/java/ghidra/app/util/bin/format/golang/rtti/GoFuncData.java