func (w *Walker) ImportFrom(fromPath, fromDir string, mode types.ImportMode) (*types.Package, error) {
	pkg, err := w.importFrom(fromPath, fromDir, mode)
	if err != nil {
		return nil, err
	}
	return pkg.Package, nil
}

func (w *Walker) import_(name string) (*apiPackage, error) {
	return w.importFrom(name, "", 0)
}

    @Nonnull
    static SettingsBuilderRequest build(
            @Nonnull ProtoSession session, @Nonnull Path installationSettingsPath, @Nonnull Path userSettingsPath) {
        return build(session, Sources.fromPath(installationSettingsPath), null, Sources.fromPath(userSettingsPath));
    }

    @Nonnull
    static SettingsBuilderRequest build(
            @Nonnull ProtoSession session,
            @Nullable Source installationSettingsSource,

        Source source = Sources.fromPath(testFile);
        try (InputStream inputStream = source.openStream()) {
            String readContent = new String(inputStream.readAllBytes());
            assertEquals(content, readContent);
        }
    }

    @Test
    void testNullHandling() {
        assertThrows(NullPointerException.class, () -> Sources.fromPath(null));

                                ? Sources.fromPath(installationToolchainsFile)
                                : null)
                .userToolchainsSource(
                        userToolchainsPath != null && Files.exists(userToolchainsPath)
                                ? Sources.fromPath(userToolchainsPath)
                                : null)
                .build();
    }

                                ? Sources.fromPath(installationSettingsFile)
                                : null)
                .projectSettingsSource(
                        projectSettingsFile != null && Files.exists(projectSettingsFile)
                                ? Sources.fromPath(projectSettingsFile)
                                : null)
                .userSettingsSource(

                                ? Sources.fromPath(installationToolchainsFile)
                                : null)
                .userToolchainsSource(
                        userToolchainsFile != null && Files.isRegularFile(userToolchainsFile)
                                ? Sources.fromPath(userToolchainsFile)
                                : null)
                .build();