This is the BrainML-X protocols subschema describing interactions with analysis servers. Included are a means to request an analysis server to perform an analysis of spike train data and return the results. Note: canonical location of the 'xml' schema is "http://www.w3.org/2001/xml.xsd", however sometimes this server is down or slow, so we use a local copy. Needed for 'return' definition. Analysis request to the server. Analysis response from the server.