code: private RValue executeConvert(Expr.Cast expr, CallStack frame) {
  		RValue operand = executeExpression(ANY_T, expr.getOperand(), frame);
  		return operand.convert(expr.getType());
  	}
docs: Execute a type conversion at a given point in the function or method body
  
  @param expr
  --- The expression to execute
  @param frame
  --- The current stack frame
  @return