public InputStream getInputStream() {
      return inputStream;
    }
Merges the log files from a given set of {@code InputStream}s into a
{@code PrintWriter}.

@param logFiles The log files to be merged
@param mergedFile Where the merged logs are printed to
@param tabOut Whether to align non-timestamped lines with others
@param suppressBlanks Whether to suppress output of blank lines

@return Whether or not problems occurred while merging the log files.

@throws IllegalArgumentException If the length of {@code logFiles} is not the same as
        the length of {@code logFileNames}
geode-core/src/main/java/org/apache/geode/internal/logging/MergeLogFiles.java