pub trait AccumulatorBinaryOperator<T>where
    T: ValueType,{
    // Required method
    fn accumulator_graphblas_type(&self) -> GrB_BinaryOp;
}pub trait AccumulatorBinaryOperator<T>where
    T: ValueType,{
    // Required method
    fn accumulator_graphblas_type(&self) -> GrB_BinaryOp;
}