The getFilter method will not allow a dot in the field name

[Sjustein]

When passing a filter string with a property containing a dot, the part of the property before the dot will be ignored and only the part after the dot will be parsed and passed into the FilterClause built by the function.

Steps to reproduce:

• Call the parser with a filter containing a dot in the property name.

Example:
?$filter=state.deleted eq false

The function handles dots in the value just fine.