String getSignature(Function function, Settings settings) {

			if (function == null) {
				return null;
			}

			StringBuilder buffy = new StringBuilder();

			inline(function, settings, buffy);
			thunk(function, settings, buffy);
			noreturn(function, settings, buffy);

			String prototypeString = function.getPrototypeString(false, false);
			buffy.append(prototypeString);
			return buffy.toString();
		}
This table field displays the Function Signature for either the program location or the address
associated with a row in the table.
Ghidra/Features/Base/src/main/java/ghidra/util/table/field/FunctionSignatureTableColumn.java