public String getNamespace() {
        return namespace;
    }
Returns the namespace of the extension associated with this manifest.
The namespace is required for internal use, and is used wherever
extension-specific files or resources need to be isolated from those of
other extensions. It is defined within the manifest by the "namespace"
property.

@return
    The namespace of the extension associated with this manifest.
guacamole/src/main/java/org/apache/guacamole/extension/ExtensionManifest.java