code: public boolean isInsertableColumn(final String columnName)
     {
        // Use index iteration to avoid generating an Iterator as side-effect
        final FieldColumnInfo[] fcInfos = getInsertableFcInfos();
        for (int i = 0; i < fcInfos.length; i++) {
          if (fcInfos[i].getCaseSensitiveColumnName().equals(columnName)) {
             return true;
          }
        }
        return false;
     }
docs: Is this specified column insertable?
  
  @param columnName Same case as in name element or property name without delimeters.
  @return true if insertable, false otherwise