code: @NonNull
      public SourceParams setTypeRaw(@NonNull String typeRaw) {
          mType = Source.asSourceType(typeRaw);
          mTypeRaw = typeRaw;
          return this;
      }
docs: Sets a custom type for the source, and sets the {@link #mType type} for these parameters
  to be {@link Source#UNKNOWN}.
  
  @param typeRaw the name of the source type
  @return {@code this}, for chaining purposes