Nodes of different colours represent the following:
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arrows point from an interface to procedures which implement that interface.
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implementation in a submodule of an interface in a parent module.
Where possible, edges connecting nodes are
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Module Procedures
private subroutine get_ESMF_Time_from_NetCDF_DateTime_integer(duration, units_string, interval, basetime, unusable, time, time_unit, rc)