[dist4]message_header  // num_bytes
[u4]0                  // version
[u4]0                  // interface ID
[u4]2                  // name
[u4]0                  // flags
[u4]0                  // padding
[anchr]message_header

[dist4]method2_params  // num_bytes
[u4]0                  // version
[dist8]param0_ptr      // param0
[dist8]param1_ptr      // param1
[anchr]method2_params

[anchr]param0_ptr
[dist4]struct_b     // num_bytes
[u4]0               // version
[dist8]struct_a_ptr // struct_a
[anchr]struct_b

[anchr]struct_a_ptr
[dist4]struct_a_member  // num_bytes
[u4]0                   // version

[anchr]param1_ptr
// The following |num_bytes| and |version| fields are also the |i| field of the
// previous struct.
[dist4]struct_a_param   // num_bytes
[u4]0                   // version
[anchr]struct_a_member
[u8]67890               // i
[anchr]struct_a_param