src/sys/component_manager/tests/collections/meta/collections_integration_test.cml

// Realm for integration test that creates and binds to component instances in a collection.
{
    include: [
        "//sdk/lib/diagnostics/syslog/client.shard.cml",
        "//src/sys/test_runners/rust/default.shard.cml",
    ],
    program: {
        binary: "bin/collections_integration_test",
    },
    children: [
        {
            name: "echo_server",
            url: "fuchsia-pkg://fuchsia.com/collections_integration_test#meta/echo_server.cm",
        },
    ],
    collections: [
        {
            name: "coll",
            durability: "transient",
        },
    ],
    use: [
        // Needed to bind to and create children
        {
            protocol: "fuchsia.sys2.Realm",
            from: "framework",
        },
    ],

    // Route Echo service from server to collection.
    offer: [
        {
            protocol: "fidl.examples.routing.echo.Echo",
            from: "#echo_server",
            to: "#coll",
        },
        {
            protocol: "fuchsia.logger.LogSink",
            from: "parent",
            to: "#coll",
        },
    ],
}