assertEmpty(options.getBootClasspath());
        assertEmpty(options.getExtDirs());
        assertEquals(options.getOutputLevel(), JavadocOutputLevel.QUIET);
        assertFalse(options.isBreakIterator());
        assertNull(options.getLocale());
        assertNull(options.getEncoding());
        assertEmpty(options.getJFlags());
        assertEmpty(options.getSourceNames());

    MinimalJavadocOptions verbose();

    @Internal
    boolean isVerbose();

    MinimalJavadocOptions quiet();

    @Input
    boolean isBreakIterator();

    void setBreakIterator(boolean breakIterator);

    MinimalJavadocOptions breakIterator(boolean breakIterator);

    MinimalJavadocOptions breakIterator();

    @Nullable @Optional @Input

     *           would be outweighed by the incompatible source change it would require.
     *           We regret any extra work and confusion this has caused.
     */
    @Override
    public boolean isBreakIterator() {
        return breakIterator.getValue();
    }

    @Override
    public void setBreakIterator(boolean breakIterator) {
        this.breakIterator.setValue(breakIterator);
    }

    @Override

        setBootClasspath(copyOrNull(original.getBootClasspath()));
        setExtDirs(copyOrNull(original.getExtDirs()));
        setOutputLevel(original.getOutputLevel());
        setBreakIterator(original.isBreakIterator());
        setLocale(original.getLocale());
        setEncoding(original.getEncoding());
        setJFlags(copyOrNull(original.getJFlags()));
        setOptionFiles(copyOrNull(original.getOptionFiles()));

Method <org.gradle.external.javadoc.CoreJavadocOptions.getSourceNames()> does not have raw return type assignable to org.gradle.api.provider.Property in (CoreJavadocOptions.java:0)
Method <org.gradle.external.javadoc.CoreJavadocOptions.isBreakIterator()> does not have raw return type assignable to org.gradle.api.provider.Property in (CoreJavadocOptions.java:0)