code: public void visitTypeInsn(int opcode, String type) {
          if (mv != null) {
              mv.visitTypeInsn(opcode, type);
          }
      }
docs: Visits a type instruction. A type instruction is an instruction that
  takes the internal name of a class as parameter.
  
  @param opcode
  the opcode of the type instruction to be visited. This opcode
  is either NEW, ANEWARRAY, CHECKCAST or INSTANCEOF.
  @param type
  the operand of the instruction to be visited. This operand
  must be the internal name of an object or array class (see
  {@link Type#getInternalName() getInternalName}).