Handle removal of "allowEmptyValue" in "Header"

Author: jmini

src/main/java/com/qdesrame/openapi/diff/compare/HeaderDiff.java

@@ -39,7 +39,6 @@ protected Optional<ChangedHeader> computeDiff(HashSet<String> refSet, Header lef
         changedHeader.setChangeDescription(!Objects.equals(left.getDescription(), right.getDescription()));
         changedHeader.setChangeRequired(getBooleanDiff(left.getRequired(), right.getRequired()));
         changedHeader.setChangeDeprecated(!Boolean.TRUE.equals(left.getDeprecated()) && Boolean.TRUE.equals(right.getDeprecated()));
-        changedHeader.setChangeAllowEmptyValue(getBooleanDiff(left.getAllowEmptyValue(), right.getAllowEmptyValue()));
         changedHeader.setChangeStyle(!Objects.equals(left.getStyle(), right.getStyle()));
         changedHeader.setChangeExplode(getBooleanDiff(left.getExplode(), right.getExplode()));
         openApiDiff.getSchemaDiff().diff(new HashSet<>(), left.getSchema(), right.getSchema()).ifPresent(changedHeader::setChangedSchema);

src/main/java/com/qdesrame/openapi/diff/model/ChangedHeader.java

@@ -16,7 +16,6 @@ public class ChangedHeader implements Changed {
     private boolean changeDescription;
     private boolean changeRequired;
     private boolean changeDeprecated;
-    private boolean changeAllowEmptyValue;
     private boolean changeStyle;
     private boolean changeExplode;
     private ChangedSchema changedSchema;
@@ -32,7 +31,6 @@ public boolean isDiff() {
         return changeDescription
                 || changeRequired
                 || changeDeprecated
-                || changeAllowEmptyValue
                 || changeStyle
                 || changeExplode
                 || (changedSchema != null && changedSchema.isDiff())
@@ -42,7 +40,6 @@ public boolean isDiff() {
     @Override
     public boolean isDiffBackwardCompatible() {
         return changeRequired
-                && changeAllowEmptyValue
                 && changeStyle
                 && changeExplode
                 && (changedSchema == null || changedSchema.isDiffBackwardCompatible(false))