init_gs2_layouts Subroutine

  subroutine init_gs2_layouts(layouts_config_in)
    implicit none
    type(layouts_config_type), intent(in), optional :: layouts_config_in
    
    if (initialized_layouts) return
    initialized_layouts = .true.

    if (initialized) return
    initialized = .true.
    call read_parameters(layouts_config_in)
  end subroutine init_gs2_layouts