public SDVariable iamax(String name, SDVariable in, long... dimensions) {
    SDValidation.validateNumerical("iamax", "in", in);
    Preconditions.checkArgument(dimensions.length >= 1, "dimensions has incorrect size/length. Expected: dimensions.length >= 1, got %s", dimensions.length);
    SDVariable out =  new org.nd4j.linalg.api.ops.impl.indexaccum.custom.ArgMax(sd,in, false, dimensions).outputVariable();
    return sd.updateVariableNameAndReference(out, name);