code: public SDVariable asum(String name, SDVariable in, int... dimensions) {
          validateNumerical("asum", in);
          SDVariable ret = f().asum(in, dimensions);
          return updateVariableNameAndReference(ret, name);
      }
docs: Absolute sum array reduction operation, optionally along specified dimensions: out = sum(abs(x))
  
  @param name       Name of the output variable
  @param in         Input variable
  @param dimensions Dimensions to reduce over. If dimensions are not specified, full array reduction is performed
  @return Reduced array of rank (input rank - num dimensions)