code: function parseSF (lcov, prefixSplit) {
    // If the filepath contains a ':', we want to preserve it.
    prefixSplit.shift()
    var currentFileName = prefixSplit.join(':')
    var currentCoverageFile = findCoverageFile(lcov, currentFileName)
    if (currentCoverageFile) {
      return currentCoverageFile
    }
    currentCoverageFile = new CoverageFile(currentFileName)
    lcov.push(currentCoverageFile)
  
    return currentCoverageFile
  }
docs: Parses a SF section
  
  @param {CoverageFile[]} lcov
  @param {string[]}       prefixSplit
  
  @returns {CoverageFile|null}