public void getRegister(String name, Encoder resultEncoder) throws IOException {
		Register reg = pcodelanguage.getRegister(name);
		if (reg == null) {
			throw new RuntimeException("No Register Defined: " + name);
		}
		encodeRegister(resultEncoder, reg);
	}
Return a description of the register with the given name
@param name is the given name
@param resultEncoder is where to write the description
@throws IOException for errors writing to the underlying stream
Ghidra/Features/Decompiler/src/main/java/ghidra/app/decompiler/DecompileCallback.java