Circular dependency found for dimension for google-analytics-data

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Environment details

• OS: macOS 10.15.6
• Ruby version: 2.6.5
• Gem name and version: google-analytics-data (0.4.0)

Steps to reproduce

I am using the google-analytics-data gem to retrieve Google Analytics reports. When I try to convert the value of 'searchTerm' to lowercase, I encountered the following error. I referred to this document: CaseExpression Could you please let me know if this attribute is not supported?

Code example

credentials_path = 'sample.json'

client = Google::Analytics::Data.analytics_data { |config| config.credentials = credentials_path }

view_id = 'properties/xxxxxxxx'

dimension_filters = []
    dimension_filters << Google::Analytics::Data::V1beta::Filter.new(
      field_name: 'searchTerm',
      string_filter: Google::Analytics::Data::V1beta::Filter::StringFilter.new(
        value: "^.+$",
        match_type: Google::Analytics::Data::V1beta::Filter::StringFilter::MatchType::FULL_REGEXP
      )
    )
    filter_expression = Google::Analytics::Data::V1beta::FilterExpression.new(
      and_group: Google::Analytics::Data::V1beta::FilterExpressionList.new(
        expressions: dimension_filters.map{|filter| {filter: filter}},
      )
    )

request = Google::Analytics::Data::V1beta::RunReportRequest.new(
      property: view_id,
      dimensions: [
        Google::Analytics::Data::V1beta::Dimension.new(
          name: 'searchTerm',
          dimension_expression: Google::Analytics::Data::V1beta::DimensionExpression.new(
            lower_case: Google::Analytics::Data::V1beta::DimensionExpression::CaseExpression.new(dimension_name: 'searchTerm')
          )
        ),
        Google::Analytics::Data::V1beta::Dimension.new(name: 'pagePath'),
      ],
      date_ranges: [
        Google::Analytics::Data::V1beta::DateRange.new(start_date: 'yesterday', end_date: 'yesterday')
      ],
      dimension_filter: filter_expression
    )
r = client.run_report(request)

Full backtrace

Google::Cloud::InvalidArgumentError: 3:Circular dependency found for dimension: searchTerm. debug_error_string:{"created":"@1688623183.696165000","description":"Error received from peer ipv4:127.0.0.1:7890","file":"src/core/lib/surface/call.cc","file_line":906,"grpc_message":"Circular dependency found for dimension: searchTerm","grpc_status":3}

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