this.rootConfigurations = rootConfigurations;
    }

    /**
     * The configurations whose files are to be marked to be deployed with a deploy path of {@link #getLibDeployPath()}.
     * <p>
     * For examples see docs for {@link EclipseWtp}
     */
    public Set<Configuration> getLibConfigurations() {
        return libConfigurations;
    }

        EclipseWtp eclipseWtp = model.getWtp();
        EclipseWtpComponent wtpComponent = eclipseWtp.getComponent();
        libDirName = wtpComponent.getLibDeployPath();
        Set<Configuration> rootConfigs = wtpComponent.getRootConfigurations();
        Set<Configuration> libConfigs = wtpComponent.getLibConfigurations();

        entries.addAll(getEntriesFromConfigurations(project, configOrEmptySet(wtp.getLibConfigurations()), configOrEmptySet(wtp.getMinusConfigurations()), wtp, wtp.getLibDeployPath()));
        component.configure(wtp.getDeployName(), wtp.getContextPath(), entries);
    }

    private static Set<Configuration> configOrEmptySet(Set<Configuration> configuration) {
        if (configuration == null) {

Method <org.gradle.plugins.ide.eclipse.model.EclipseWtpComponent.getLibDeployPath()> does not have raw return type assignable to org.gradle.api.provider.Property in (EclipseWtpComponent.java:0)