jooby/src/main/java/org/jooby/Request.java
/**
   * Get a flash attribute value or throws {@link Err BAD_REQUEST error} if missing.
   *
   * @param name Attribute's name.
   * @return Flash attribute.
   * @throws Err Bad request error if flash attribute is missing.
   */
Get a flash attribute value or throws  Err BAD_REQUEST error if missing.
@param name Attribute's name.
@return Flash attribute.
@throws Err Bad request error if flash attribute is missing.
Get a flash attribute value or throws Err BAD_REQUEST error if missing . @param name Attribute ' s name . @return Flash attribute . @throws Err Bad request error if flash attribute is missing .
@Nonnull
  default String flash(final String name) throws Err {
    return ifFlash(name)
        .orElseThrow(() -> new Err(Status.BAD_REQUEST,
            "Required flash attribute: '" + name + "' is not present"));
  }
@ Nonnull default String flash ( final String name ) throws Err { return ifFlash ( name ) . orElseThrow ( ( ) -> new Err ( Status . BAD_REQUEST , "Required flash attribute: '" + name + "' is not present" ) ) ; }
Get a flash attribute value or throws {@link Err BAD_REQUEST error} if missing.
Get a flash attribute value or throws { @link Err BAD_REQUEST error } if missing .