Returns the names of all sections managed by this {@code Ini} instance or an empty collection if there are no sections.
@return the names of all sections managed by this {@code Ini} instance or an empty collection if there are no sections.
See Implementation
Returns the names of all sections managed by this {@code Ini} instance or an empty collection if there are no sections.
@return the names of all sections managed by this {@code Ini} instance or an empty collection if there are no sections.