Query string for filtering entity. Expressed in FIQL/RSQL language.
This resource allows filtering of results by query using RSQL.
Examples:

• ?where=brokerType==solace;state==RELEASED
• ?where=(attributes.name==color;attributes.value==red)
  Notation:
• Sub elements can be queried with dot notation, for example plan.name==Gold* matches all plans where the name starts with Gold. This also applies to querying nested arrays.
• Queries on attributes where the name and the value must match specific criteria can be expressed by grouping the name and value search criteria.
  for example (attributes.name==color;attributes.value==Bl*) matches all objects where the value of attribute color starts with Bl such as Black or Blue. Queries on a combiation of attributes are also possible (attributes.name==color;attributes.value==Bl*);(attributes.name==flavour;attributes.value==*Berry) only matches documents where color starts with Bl and the flavour attribute ends in berry.

See https://github.com/jirutka/rsql-parser for details of the supported query operators and syntax

name of a field to sort on, the sort direction parameter determines the order (asc/desc) of the sort

sort direction to be applied to the sort field name