Function libgit2_sys::git_merge_trees

pub unsafe extern "C" fn git_merge_trees(
    out: *mut *mut git_index, 
    repo: *mut git_repository, 
    ancestor_tree: *const git_tree, 
    our_tree: *const git_tree, 
    their_tree: *const git_tree, 
    opts: *const git_merge_options
) -> c_int