Function etxn_details 

pub unsafe extern "C" fn etxn_details(
    write_ptr: u32,
    write_len: u32,
) -> i64

Write a full emit_details stobject into the buffer specified. @param write_ptr A sufficiently large buffer to write into. @param write_len The length of that buffer. @return The number of bytes written or a negative integer indicating an error.