code: function findWhereUnwrapped(wrapper, predicate, filter = treeFilter) {
    return wrapper.flatMap(n => filter(n.getNodeInternal(), predicate));
  }
docs: Finds all nodes in the current wrapper nodes' render trees that match the provided predicate
  function.
  
  @param {ShallowWrapper} wrapper
  @param {Function} predicate
  @param {Function} filter
  @returns {ShallowWrapper}