Function LLVMDIBuilderCreateUnionType 

pub(crate) unsafe extern "C" fn LLVMDIBuilderCreateUnionType<'ll>(
    Builder: &DIBuilder<'ll>,
    Scope: Option<&'ll Metadata>,
    Name: *const c_uchar,
    NameLen: size_t,
    File: &'ll Metadata,
    LineNumber: c_uint,
    SizeInBits: u64,
    AlignInBits: u32,
    Flags: DIFlags,
    Elements: *const Option<&'ll Metadata>,
    NumElements: c_uint,
    RunTimeLang: c_uint,
    UniqueId: *const c_uchar,
    UniqueIdLen: size_t,
) -> &'ll Metadata