hasProperty method
- Checks recursively if object or its subobjects has a property with specified name.
- The object can be a user defined object, map or array.
- The property name correspondently must be object property,
- map key or array index.
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obj
an object to introspect.
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name
a name of the property to check.
- Returns true if the object has the property and false if it doesn't.
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