Imenu provides too detailed leafs

[kostafey]

After latest lsp update, Imenu provides too deep/detailed leafs.
E.g. for the following Scala class I expect b and b2 as Imenu contents (classes and functions list, not function contents), but c and c2 actually appears.

class A {
    def b: Unit = {
        val c: Int = 0
    }

    def b2: Unit = {
        val c2: Int = 0
    }
}

How can I fix it?