in log4j-ecs-layout/src/main/java/co/elastic/logging/log4j/EcsLayout.java [81:92]
private static int getLineNumber(LocationInfo locationInformation) {
int lineNumber = -1;
String lineNumberString = locationInformation.getLineNumber();
if (!LocationInfo.NA.equals(lineNumberString)) {
try {
lineNumber = Integer.parseInt(lineNumberString);
} catch (NumberFormatException e) {
// ignore
}
}
return lineNumber;
}