code: function getTableDefinition(tableDefinitions, tableName) {
      Validate.isObject(tableDefinitions);
      Validate.notNull(tableDefinitions);
      Validate.isString(tableName);
      Validate.notNullOrEmpty(tableName);
  
      return tableDefinitions[tableName.toLowerCase()];
  }
docs: Gets the table definition for the specified table name from the tableDefinitions object
  @private