@foreach

Description:

public virtual void @foreach (string start_term, IndexIterFunc func)

Iterate over an index optionally starting from some given term.

Note that unordered indexes (like HashIndex) has undefined behaviour with this method.

this	The index to iterate over
start_term	The term to start from or `null` to iterate over all terms
func	Called for each term in the index
userdata	Arbitrary data to pass back to `func`