code: public ColumnModel getColumnByColName(String colName) {
  		for (ColumnModel columnModel : columns) {
  			if (columnModel.getColumnName() != null && columnModel.getColumnName().equalsIgnoreCase(colName))
  				return columnModel;
  		}
  		return null;
  	}
docs: Get ColumnModel by columnName ignore case, if not found, return null