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• target: Exposed if the given Criterion supports targeting a specific sub field, example: FieldDefinition or Meta Data identifier
• value: The value(s) to filter on, this is typically a  scalar or array of scalars.
• operator: Exposed on some Criteria
  • All operators can be seen as constants on eZ\Publish\API\Repository\Values\Content\Query\Criterion\Operator, at time of writing: IN, EQ, GT, GTE, LT, LTE, LIKE, BETWEEN,CONTAINS
  • Most Criteria does not expose this and selects EQorEQ or IN depending on if value is scalaror scalar or array
  • IN & BETWEEN always acts on a array of values, while the other operators acts on single scalar value
• valueData : Additional value data, required by some criterions, MapLocationDistance for instance

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