src/main/java/seedu/address/logic/commands/EditCommand.java
/**
         * Returns an tag set which has {@code addedTags} added to {@code existingTags}.
         */
Returns an tag set which has  addedTags added to  existingTags.
Returns an tag set which has addedTags added to existingTags .
public Set<Tag> combineTagsAdded(Set<Tag> addedTags, Set<Tag> existingTags) {
            Set<Tag> result = existingTags;
            for (Tag tag: addedTags) {
                if (!existingTags.contains(tag)) {
                    result = addField(result, tag);
                }
            }
            return result;
        }
public Set < Tag > combineTagsAdded ( Set < Tag > addedTags , Set < Tag > existingTags ) { Set < Tag > result = existingTags ; for ( Tag tag : addedTags ) { if ( ! existingTags . contains ( tag ) ) { result = addField ( result , tag ) ; } } return result ; }
Returns an tag set which has {@code addedTags} added to {@code existingTags}.
Returns an tag set which has { @code addedTags } added to { @code existingTags } .