public String getSelendroidExtensions() {
    return (String) getRawCapabilities().get(SELENDROID_EXTENSIONS);
  }
Full path of the dex file (on the host machine) containing Selendroid extensions to be loaded at run time
Example: /home/user/extension.dex
selendroid-common/src/main/java/io/selendroid/common/SelendroidCapabilities.java