com.ustadmobile.libcache.io.TransferResult -> hl7:
# {"id":"sourceFile","fileName":"SourceExt.kt"}
    byte[] sha256 -> a
    long transferred -> b
    1:3:void <init>(byte[],long):26:26 -> <init>
    4:5:void <init>(byte[],long):27:27 -> <init>
    6:8:void <init>(byte[],long):28:28 -> <init>
    4:8:boolean equals(java.lang.Object):32:32 -> equals
    9:21:boolean equals(java.lang.Object):34:34 -> equals
    22:33:boolean equals(java.lang.Object):35:35 -> equals
    1:8:int hashCode():39:39 -> hashCode
    9:16:int hashCode():40:40 -> hashCode
    1:36:java.lang.String toString():0:0 -> toString
