code: public String getDescriptorExpression() {
      // We only need to import the outermost descriptor.
      Descriptor descriptor = typeDescriptor;
      while (descriptor.getContainingType() != null) {
        descriptor = descriptor.getContainingType();
      }
      return JavaQualifiedNames.getQualifiedName(descriptor) + ".getDescriptor()";
    }
docs: For ParseInfo generation, return a string that represents the Java source expression for the
  static descriptor constant.
  
  @return The Java source expression for this type's descriptor.