How to install knn_batch in nearest neighbors module?

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attributes

Python3.6

I'm trying to run a code that uses nearest neighbor module. It uses an attribute named Knn_batch in this module. The code gives me this error:

AttributeError: module 'nearest_neighbors' has no attribute 'knn_batch'

the code :

def knn_search(support_pts, query_pts, k):
    """
    :param support_pts: points you have, B*N1*3
    :param query_pts: points you want to know the neighbour index, B*N2*3
    :param k: Number of neighbours in knn search
    :return: neighbor_idx: neighboring points indexes, B*N2*k
    """

    neighbor_idx = nearest_neighbors.knn_batch(support_pts, query_pts, k, omp=True)
    return neighbor_idx.astype(np.int32)

What I have tried:

I need to build nearest neighbors on windows to have this attribute