Function llvm_di_builder_create_function 

pub fn llvm_di_builder_create_function(
    builder: &LLVMDIBuilder<'_>,
    scope: LLVMMetadata,
    name: &str,
    linkage_name: &str,
    file: LLVMMetadata,
    line: u32,
    ty: LLVMMetadata,
    is_local_to_unit: bool,
    is_definition: bool,
    scope_line: u32,
    flags: LLVMDIFlags,
    is_optimized: bool,
) -> LLVMMetadata

LLVMDIBuilderCreateFunction