function cellToVertexes(h3Index) {
    const [lower, upper] = h3IndexToSplitLong(h3Index);
    const maxNumVertexes = 6;
    const vertexIndexes = C._calloc(maxNumVertexes, SZ_H3INDEX);
    try {
        throwIfError(H3.cellToVertexes(lower, upper, vertexIndexes));
        return readArrayOfH3Indexes(vertexIndexes, maxNumVertexes);
    } finally {
        C._free(vertexIndexes);
    }
}
Find the indexes for all vertexes of a cell.
@static
@param {H3IndexInput} h3Index     Cell to find all vertexes for
@return {H3Index[]}   All vertex indexes of this cell
@throws {H3Error}     If the input is invalid