code: public String getDebugString()
      {
          final StringBuilder b = new StringBuilder();
  
          boolean first = true;
  
          for (final ValidationError e : m_errors)
          {
              if (first)
              {
                  first = false;
              }
              else
              {
                  b.append("\n");
              }
              b.append(e.getContext()).append(" - ").append(e.getMessage());
          }
          return b.toString();
      }
docs: Returns a string with all error messages for debugging purposes.
  
  @return String