private boolean isCompatible(String guacamoleVersion) {
        return ALLOWED_GUACAMOLE_VERSIONS.contains(guacamoleVersion);
    }
Returns whether the given version of Guacamole is compatible with this
version of Guacamole as far as extensions are concerned.

@param guacamoleVersion
    The version of Guacamole the extension was built for.

@return
    true if the given version of Guacamole is compatible with this
    version of Guacamole, false otherwise.
guacamole/src/main/java/org/apache/guacamole/extension/ExtensionModule.java