Determines whether the function with the given id is a higher-order function, i.e.,
either takes a function as an argument or (may) returns a function.
If the return is an identity, e.g., function(x) x, this is not considered higher-order,
if no function is passed as an argument.
Please note that inspecting higher order functions can be sped up (if queries multiple times) by providing an inverted graph as well!
Determines whether the function with the given id is a higher-order function, i.e., either takes a function as an argument or (may) returns a function. If the return is an identity, e.g.,
function(x) x, this is not considered higher-order, if no function is passed as an argument. Please note that inspecting higher order functions can be sped up (if queries multiple times) by providing an inverted graph as well!