This is the base class for type-specific SyncList classes.
A SyncList can only be of the following type;
• Basic type (byte, int, float, string, UInt64, etc)
• Built-in Unity math type (Vector3, Quaternion, etc),
• NetworkIdentity
• NetworkInstanceId
• NetworkHash128
• GameObject with a NetworkIdentity component attached.
| HandleMsg | Internal function used for remote list operations. |