git_email_create_from_diffint git_email_create_from_diff(libgit2.buffer.git_buf* out_, libgit2.diff.git_diff* diff, size_t patch_idx, size_t patch_count, const(libgit2.oid.git_oid)* commit_id, const(char)* summary, const(char)* body_, const(libgit2.types.git_signature)* author, const(libgit2.email.git_email_create_options)* opts)