return the singleton measurements object . concode_field_sep HashMap<String,OneMeasurement> data concode_elem_sep String MEASUREMENT_TYPE_DEFAULT concode_elem_sep Properties measurementproperties concode_elem_sep boolean histogram concode_elem_sep Measurements singleton concode_elem_sep Properties _props concode_elem_sep String MEASUREMENT_TYPE concode_field_sep void exportMeasurements concode_elem_sep void measure concode_elem_sep String getSummary concode_elem_sep void setProperties concode_elem_sep OneMeasurement constructOneMeasurement concode_elem_sep void reportReturnCode