shillelagh/src/main/java/shillelagh/Builder.java
final void checkColumnName(String columnName) {
    try {
      tableObject.getDeclaredField(columnName);
    } catch (NoSuchFieldException e) {
      throw new RuntimeException(
          String.format("%s isEqualTo not a field found in %s", columnName, tableObject));
    }
  }
final void checkColumnName(String columnName) {
    try {
      tableObject.getDeclaredField(columnName);
    } catch (NoSuchFieldException e) {
      throw new RuntimeException(
          String.format("%s isEqualTo not a field found in %s", columnName, tableObject));
    }
  }
Check to ensure that the column name provided is valid