this.streamId = streamId
      this.windowSizeIncrement = windowSizeIncrement
    }

    override fun priority(
      streamId: Int,
      streamDependency: Int,
      weight: Int,
      exclusive: Boolean,
    ) {
      throw UnsupportedOperationException()
    }

    override fun pushPromise(
      streamId: Int,
      associatedStreamId: Int,

1DF1F..1DF24  ; disallowed                             # NA   <reserved-1DF1F>..<reserved-1DF24>
1DF25..1DF2A  ; valid                                  # 15.0 LATIN SMALL LETTER D WITH MID-HEIGHT LEFT HOOK..LATIN SMALL LETTER T WITH MID-HEIGHT LEFT HOOK
1DF2B..1DFFF  ; disallowed                             # NA   <reserved-1DF2B>..<reserved-1DFFF>

            stream.addBytesToWriteWindow(windowSizeIncrement)
          }
        }
      }
    }

    override fun priority(
      streamId: Int,
      streamDependency: Int,
      weight: Int,
      exclusive: Boolean,
    ) {
      // TODO: honor priority.
    }

    override fun pushPromise(
      streamId: Int,
      promisedStreamId: Int,
      requestHeaders: List<Header>,