String form of `Throwable#getStackTrace()`

GetStackTraceString.java

import java.io.PrintWriter;
/** Wrapper class for {@link #of()} */
public final class GetStackTraceString {
  /**
    @param e the {@link Throwable}
    @return
      a {@link String} form of this {@code Throwable}’s {@link Throwable#getStackTrace() stack trace}
      using {@link Throwable#printStackTrace(PrintWriter)}
  */
  public static String of(Throwable e) {
    java.io.StringWriter stringWriter = new java.io.StringWriter();
    e.printStackTrace(new PrintWriter(stringWriter));
    return stringWriter.toString();
  }
}