collection = ((Multiset<?>) collection).elementSet();
    }
    /*
     * AbstractSet.removeAll(List) has quadratic behavior if the list size
     * is just more than the set's size.  We augment the test by
     * assuming that sets have fast contains() performance, and other
     * collections don't.  See
     * https://github.com/google/guava/issues/1013
     */

      <superClass>ModelBase</superClass>
      <version>4.0.0+</version>
      <description>Modifications to the build process which is activated based on environmental
        parameters or command line arguments.</description>
      <fields>
        <field>
          <name>id</name>
          <required>true</required>
          <version>4.0.0+</version>
          <type>String</type>

                ```
                """
            ),
        ] = None,
        **extra: Annotated[
            Any,
            Doc(
                """
                Extra keyword arguments to be stored in the app, not used by FastAPI
                anywhere.
                """
            ),
        ],
    ) -> None:
        self.debug = debug
        self.title = title

  2. Conveying Modified Versions.

  If you modify a copy of the Library, and, in your modifications, a
facility refers to a function or data to be supplied by an Application
that uses the facility (other than as an argument passed when the
facility is invoked), then you may convey a copy of the modified
version:

   a) under this License, provided that you make a good faith effort to

pkg regexp/syntax, const ErrMissingBracket = "missing closing ]"
pkg regexp/syntax, const ErrMissingParen = "missing closing )"
pkg regexp/syntax, const ErrMissingRepeatArgument = "missing argument to repetition operator"
pkg regexp/syntax, const ErrTrailingBackslash = "trailing backslash at end of expression"
pkg regexp/syntax, const ErrUnexpectedParen = "unexpected )"