OutOfMemoryError in DefaultFieldExtractor

[chorniyn]

OOM happened in DefaultFieldExtractor.getFields() method
`java.lang.OutOfMemoryError: Java heap space

at java.util.Arrays.copyOf(Arrays.java:3332)
at java.lang.AbstractStringBuilder.expandCapacity(AbstractStringBuilder.java:137)
at java.lang.AbstractStringBuilder.ensureCapacityInternal(AbstractStringBuilder.java:121)
at java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:622)
at java.lang.StringBuilder.append(StringBuilder.java:202)
at java.lang.StringBuilder.append(StringBuilder.java:76)
at net.htmlparser.jericho.Renderer$HR_ElementHandler.processBlockContent(Renderer.java:1193)
at net.htmlparser.jericho.Renderer$AbstractBlockElementHandler.process(Renderer.java:1111)
at net.htmlparser.jericho.Renderer$Processor.appendSegmentProcessingChildElements(Renderer.java:852)
at net.htmlparser.jericho.Renderer$Processor.appendTo(Renderer.java:823)
at net.htmlparser.jericho.Renderer.appendTo(Renderer.java:140)
at net.htmlparser.jericho.CharStreamSourceUtil.toString(CharStreamSourceUtil.java:63)
at net.htmlparser.jericho.Renderer.toString(Renderer.java:150)
at com.ontometrics.scraper.extraction.DefaultFieldExtractor.extractFieldsFromUL(DefaultFieldExtractor.java:312)
at com.ontometrics.scraper.extraction.DefaultFieldExtractor.extractFieldsFromULs(DefaultFieldExtractor.java:204)
at com.ontometrics.scraper.extraction.DefaultFieldExtractor.getFields(DefaultFieldExtractor.java:65)`

The page content on which failure happens is referred to in test DefaultFieldExtractorTest.canExtractFieldsWOOutOfMemoryError().