@Override
	public RVal cast(DataType type) {
		return new CallExpr(ctx, type, userop, args);
	}
Build a call expression

@param ctx the context
@param userop the userop to invoke
@param args the arguments to pass in (by reference)
Ghidra/Features/SystemEmulation/src/main/java/ghidra/pcode/struct/CallExpr.java