VK_DESCRIPTOR_BINDING_PARTIALLY_BOUND_BIT

Undocumented in source but is binding to an external library. You might be able to learn more by searching the web for its name.
nothrow @nogc extern (System)
enum VK_DESCRIPTOR_BINDING_PARTIALLY_BOUND_BIT = VkDescriptorBindingFlagBits.VK_DESCRIPTOR_BINDING_PARTIALLY_BOUND_BIT;

Meta