SES-1687 removed collection convenience methods from CloseableIterationBase, replaced with utility methods in Iterations.
Merge branch 'master' into ses-1687
SES-1687 introduced QueryResults util class extending Iterations with
queryresult-specific methods. Old QueryResultUtil class is a subtype,
marked deprecated. usage in codebase replaced.
SES-1687 removed singleResult() implementations (now available via
QueryResults util methods)
Merged in ses-1687 (pull request #28: SES-1687: iterations and query results convenience methods: cleanup)