Add sample cell filename, cell sample size, and sample plate size to metadata

src/main/java/GraphWithMapData.java

@@ -9,7 +9,9 @@ import java.util.Map;
 //Custom vertex class means a lot of the map data can now be encoded in the graph itself
 public class GraphWithMapData implements java.io.Serializable {
 
-    private String sourceFilename;
+    private String cellFilename;
+    private int cellSampleSize;
+    private String plateFilename;
     private final SimpleWeightedGraph graph;
     private final int numWells;
     private final Integer[] wellPopulations;
@@ -112,12 +114,20 @@ public class GraphWithMapData implements java.io.Serializable {
         return time;
     }
 
-    public void setSourceFilename(String filename) {
-        this.sourceFilename = filename;
+    public void setCellFilename(String filename) { this.cellFilename = filename; }
+
+    public String getCellFilename() { return this.cellFilename; }
+
+    public Integer getCellSampleSize() { return this.cellSampleSize; }
+
+    public void setCellSampleSize(int size) { this.cellSampleSize = size;}
+
+    public void setPlateFilename(String filename) {
+        this.plateFilename = filename;
     }
 
-    public String getSourceFilename() {
-        return sourceFilename;
+    public String getPlateFilename() {
+        return plateFilename;
     }
 
     public Double getReadErrorRate() {