List the client's filesystem roots (roots/list). Per client/roots
§Implementation Guidelines, checks the client's roots capability before
usage and throws McpException if the client does not support it; parses
the client's reply into a typed ListRootsResult. Throws on a stateless
(MRTR) request — like sample/elicit, a server->client round-trip has no
channel on the stateless protocol; use ToolResponse.inputRequired instead.
List the client's filesystem roots (roots/list). Per client/roots §Implementation Guidelines, checks the client's roots capability before usage and throws McpException if the client does not support it; parses the client's reply into a typed ListRootsResult. Throws on a stateless (MRTR) request — like sample/elicit, a server->client round-trip has no channel on the stateless protocol; use ToolResponse.inputRequired instead.