Add Editable.toString flow step

java/ql/test/stubs/google-android-9.0.0/android/text/PrecomputedText.java

@@ -0,0 +1,41 @@
+// Generated automatically from android.text.PrecomputedText for testing purposes
+
+package android.text;
+
+import android.graphics.Rect;
+import android.text.Spannable;
+import android.text.TextDirectionHeuristic;
+import android.text.TextPaint;
+
+public class PrecomputedText implements Spannable
+{
+    protected PrecomputedText() {}
+    public <T> T[] getSpans(int p0, int p1, Class<T> p2){ return null; }
+    public CharSequence subSequence(int p0, int p1){ return null; }
+    public PrecomputedText.Params getParams(){ return null; }
+    public String toString(){ return null; }
+    public char charAt(int p0){ return '0'; }
+    public float getWidth(int p0, int p1){ return 0; }
+    public int getParagraphCount(){ return 0; }
+    public int getParagraphEnd(int p0){ return 0; }
+    public int getParagraphStart(int p0){ return 0; }
+    public int getSpanEnd(Object p0){ return 0; }
+    public int getSpanFlags(Object p0){ return 0; }
+    public int getSpanStart(Object p0){ return 0; }
+    public int length(){ return 0; }
+    public int nextSpanTransition(int p0, int p1, Class p2){ return 0; }
+    public static PrecomputedText create(CharSequence p0, PrecomputedText.Params p1){ return null; }
+    public void getBounds(int p0, int p1, Rect p2){}
+    public void removeSpan(Object p0){}
+    public void setSpan(Object p0, int p1, int p2, int p3){}
+    static public class Params
+    {
+        public String toString(){ return null; }
+        public TextDirectionHeuristic getTextDirection(){ return null; }
+        public TextPaint getTextPaint(){ return null; }
+        public boolean equals(Object p0){ return false; }
+        public int getBreakStrategy(){ return 0; }
+        public int getHyphenationFrequency(){ return 0; }
+        public int hashCode(){ return 0; }
+    }
+}