public boolean isRegister(Varnode varnode) {
		return varnode.isRegister() || trans.getRegister(varnode) != null;
	}
Check if the varnode is associated with a register.

@param varnode to check
@return true if the varnode is associated with a register
Ghidra/Features/Base/src/main/java/ghidra/program/util/VarnodeContext.java