docs: SchemaObject readCollateClauseOrNull() {
  
          if (token.tokenType == Tokens.COLLATE) {
              read();
  
              SchemaObject collation =
                  database.schemaManager.getSchemaObject(token.namePrefix,
                      token.tokenString, SchemaObject.COLLATION);
  
              return collation;
          }
  
          return null;
      }