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<         private SAMAlignmentHeader header = null;
<         private BAMIndex cachedBamIndex = null;
< 
<         /// <summary>
<         /// Path to the .bam file that we read header and cachedBamIndex from.  When making multiple calls to ParseRange,
<         /// we re-use these objects for the second and further ParseRange calls.  However, if we re-use the
<         /// same BamParser for a different file, this cached data must be discarded.
<         /// </summary>
<         internal string cachedBamPath = null; 
< 
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<         /// <param name="useCaching">If we've already parsed the header, re-use that data.  useCaching should generally be set 
<         /// to true, for speed.  However, if we parse one bam file and then parse a different bam file, useCaching should be false.  
<         /// Extension methods use the cachedBamPath member to automatically set the flag appropriately in normal use 
<         /// cases.  Extra-special case: To re-parse a bam file which has changed on disk in the meantime, the caller should 
<         /// set useCaching to false (or use a new BamParser instance).</param>
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<               string refSeqName = null, int? refSeqIndex = null, int start = 0, int end = int.MaxValue, bool useCaching = true)
---
>               string refSeqName = null, int? refSeqIndex = null, int start = 0, int end = int.MaxValue)
453,457c438,440
<             if (!useCaching || header == null)
<             {
<                 ValidateReader();
<                 header = this.GetHeader();
<             }
---
>             ValidateReader();
>             
>             SAMAlignmentHeader header = this.GetHeader();
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<                     GetAlignmentWithIndex(bamIndexStorage, (int)refSeqIndex, start, end, header, ref seqMap, useCaching);
---
>                     GetAlignmentWithIndex(bamIndexStorage, (int)refSeqIndex, start, end, header, ref seqMap);
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<                SAMAlignmentHeader header, ref SequenceAlignmentMap seqMap, bool useCaching)
---
>                SAMAlignmentHeader header, ref SequenceAlignmentMap seqMap)
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<             BAMIndex bamIndexInfo = null;
<             if (useCaching && cachedBamIndex != null) bamIndexInfo = cachedBamIndex;
<             if (bamIndexInfo == null)
<             {
<                 bamIndexInfo = bamIndexStorage.Read();
<                 cachedBamIndex = bamIndexInfo;
<             }
---
>             BAMIndex bamIndexInfo = bamIndexStorage.Read();
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<         internal SequenceAlignmentMap GetAlignment(Stream bamStream, BAMIndexStorage bamIndexStorage, int refSeqIndex, bool useCaching = true)
---
>         internal SequenceAlignmentMap GetAlignment(Stream bamStream, BAMIndexStorage bamIndexStorage, int refSeqIndex)
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<             return GetAlignmentMap(bamStream, bamIndexStorage, null, refSeqIndex, useCaching : useCaching);
---
>             return GetAlignmentMap(bamStream, bamIndexStorage, null, refSeqIndex);
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<         internal SequenceAlignmentMap GetAlignment(Stream bamStream, BAMIndexStorage bamIndexStorage, string refSeqName, bool useCaching = true)
---
>         internal SequenceAlignmentMap GetAlignment(Stream bamStream, BAMIndexStorage bamIndexStorage, string refSeqName)
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<             return GetAlignmentMap(bamStream, bamIndexStorage, refSeqName, useCaching : useCaching);
---
>             return GetAlignmentMap(bamStream, bamIndexStorage, refSeqName);
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<         // Returns SequenceAlignmentMap by parsing specified BAM stream and BAMIndexFile for the specified reference sequence index.
---
>         // Returns SequenceAlignmentMap by prasing specified BAM stream and BAMIndexFile for the specified reference sequence index.
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<         internal SequenceAlignmentMap GetAlignment(Stream bamStream, BAMIndexStorage bamIndexStorage, string refSeqName, int start, int end, bool useCaching = true)
---
>         internal SequenceAlignmentMap GetAlignment(Stream bamStream, BAMIndexStorage bamIndexStorage, string refSeqName, int start, int end)
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<             return GetAlignmentMap(bamStream, bamIndexStorage, refSeqName, null, start, end, useCaching);
---
>             return GetAlignmentMap(bamStream, bamIndexStorage, refSeqName, null, start, end);
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<         // Returns SequenceAlignmentMap by parsing specified BAM stream and BAMIndexFile for the specified reference sequence index.
---
>         // Returns SequenceAlignmentMap by prasing specified BAM stream and BAMIndexFile for the specified reference sequence index.
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<         internal SequenceAlignmentMap GetAlignment(Stream bamStream, BAMIndexStorage bamIndexStorage, int refSeqIndex, int start, int end, bool useCaching)
---
>         internal SequenceAlignmentMap GetAlignment(Stream bamStream, BAMIndexStorage bamIndexStorage, int refSeqIndex, int start, int end)
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<             return GetAlignmentMap(bamStream, bamIndexStorage, null, refSeqIndex, start, end, useCaching);
---
>             return GetAlignmentMap(bamStream, bamIndexStorage, null, refSeqIndex, start, end);