this.parameterOffset += this.pad1;

            this.totalParameterCount = writeParametersWireFormat(this.txn_buf, this.bufParameterOffset);
            this.bufDataOffset = this.totalParameterCount; // data comes right after data

            int available = this.maxBufferSize - this.parameterOffset;
            this.parameterCount = Math.min(this.totalParameterCount, available);
            available -= this.parameterCount;

            parameterOffset += pad;

            totalParameterCount = writeParametersWireFormat( txn_buf, bufParameterOffset );
            bufDataOffset = totalParameterCount; // data comes right after data

            int available = maxBufferSize - parameterOffset;
            parameterCount = Math.min( totalParameterCount, available );
            available -= parameterCount;