in:query breaks OpenAPI generation

A TD like [this](http://plugfest.thingweb.io/playground/#C4EwVgzg9gdg3gKAAQqQIgJYjQLnQVwCcYcIMBbABwBsBTAdQ2AAsARWgMwEN9rgI0AGmSo0AAQDGsYLQAewXOmbBglCDgD0GgO66AdNoDMeqIQDmGgEwAGS5Z1RgG0BoBuARj3uhIlGmBMdIpoALIAngAyXFQAKswYMGY+qOggtBAShBiUAbDBAGpc1FhIMaxIUpQYtCBIHIRQ5EgstEgQlLQSAOQQdRiEEMBIctE0tMmiEJ1ETGHsHAlMGLACeIgpKWgARlxkEgD6GYrrG6doGcy05ON427sYEhOnmwnBAI74tIRhaL4bAL5-f7CTZTCQzYA-PAAbT+mx2e0Ojz+AF0QaJKA0OoQAuljnDJsAuMB8KskCdnqJIR1goMsoknpT0IRaFwQAB5GDUKHNQifdFM9DaLIyTncxTcahTAVMtBQLZTQiuLhbIJ4SXSglnDimchk2GC04Uw1nZgsjjBZSqdRachhaijPQjKh0PRScgaQbE0mMk2bKCUYIstmYgNfSG+v1+KQwGSxmJhGm3LiUGgPYnLGAaSB5LVMwEmlF5guoYF-NBcCS5GBk42bYBQMxmNXkvOgrgcG51Iqak2YNJURy0WMSnu0GWUtA6wh6xQGqOthcbNBmziWlRqTQaO0OqhO2SjV3u5yN5vjCcLuWB24JVxQADWrKrmcjUbQMbjwATSfQKbTEgzWBs2gGBfiXEtBSLSkIKQMtNloVxh34fFJygRDCEuDMGTWNtRBAYkuBQy9qS7c5gHpJIL0FNBgw5LkeXI-lcLOYUmFoMUeQ1WhmNgqjl2nWcYR4lI60vVcLVuK1N1te1HWdMY3UaDQoGYV8-SvWl8AVTIMC2WgEKQtS+wgLTQwbKRqGCahYDMSgoGoSy+L7D8kO-Ui-2KADq2A3NwJ4qDnhgwF-iAA) breaks the OpenAPI generation in a weird way. This has no real equivalent in OpenAPI so it makes sense that something is wrong but we have to do some checks beforehand